Selective strand trapping and cutting device for use in strand doubling or twisting machines



H. OWENS ET AL Nov. 1 6, 1937.

2,099,530 SELECTIVE STRAND TRAPPING AND CUTTING DEVICE FOR USE IN STRAND DOUBLING OR TWISTING MACHINES Filed March 1, 1937 6 Sheets-Sheet 1 1771/0 n7ors #emy Owens NOV. 16,1937. OWENS ET AL 2,099,530

SELECTIVE STRAND TRAPPING AND. CUTTING DEVICE FOR USE IN STRAND DOUBLING OR TWISTING MACHINES Filed March 1, 1957 4 6 Sheets-Sheet 2 SELECTIVE STRAND TRAPPING AND CUTTING DEVICE FOR USE IN STRAND DOUBLING OR TWISTING MACHINES Filed March 1, 1937 6 Sheets-Sheet C5 Nov. 16', 1937. OWENS ET AL 2,099,530

Nov. 16, 1937. H. OWENS ET: AL 2,099,530

SELECTIVE STRAND TRAPPING AND CUTTING DEVICE FOR USE IN STRAND DOUBLING OR TWISTING MACHINES Filed March 1, 1937 6 Sheets-Sheet 4 QM Q9272??? Nov. 16, 1937. H. OWENS ET AL 2,099,530

SELECTIVE STRAND TRAPPING AND CUTTING DEVICE FOR USE IN STRAND DOUBLING OR TWISTING MACHINES Filed March 1, 195'? 6 Sheets-Sheet 5 H. OWENS ET AL 2,099,530 SELECTIVE STRAND. TRAPPING AND CUTTING DEVICE FOR 6 Sheets-Sheet 6 50M .flfiorney i'nvenT'ors Henry Owens Samuel ,B077'5m/ey Nov. 16, 1937.

USE IN- STRAND DOUBLING OR TWISTING MACHINES Filed March 1,

Patented Nov. 16, 1937 2,699,530

UNITED STATES PATENT OFFIQE SELECTIVE STRAND TRAPPING AND CUT- TING DEVICE FQR USE IN STRAND DOU- BLING OR TWISTING MACHINES Henry Owens, Providence, R. I., and Samuel Bottomley, North Andover, Mass, assignors to Henry Owens & Company, Inc., Providence, R. I.', a corporation of Ithode Island Application March 1, 1937, Serial No. 128,374

22 Claims. (01. 11732) Our invention relates to improvements in varitaken through the embodiment of our device ous adaptations of the invention of Henry Owens, shown in Fig. 2. a joint applicant herein, for Strand tensioning, Figs. 4 and are rear elevational and longituslack compensating, selective trapping and cutdinal vertical sectional views respectively generting device, patented December 15, 1936, No. ally similar to Figs. 2 and 3 of a different em- 5 2,064,685 to a strand doubling or twisting mabodiment of our invention employing a single chine having twisting or spinning ring means cutting or trapping means in each vertically anda plurality of vertically spaced pairs of strand spaced row and also illustrating the type of nip feed rolls and adapted to have horizontally means illustrated in Fig. 1 adapted to actuate the spaced strands passing through the respective respective cutting or trapping means on breakpairs of vertically spaced feed rolls and including age of the strands in front of their respective if desired in each row, embodiments of a supfeed rolls. plemental means adapted to actuate the cutting Figs. 6 and 7 are end and rear elevations reor trapping means shown in-said patent in rear spectively, generally similar to Figs. 1 and 4 of of said feed rolls on breakage of the strand in an alternative type of means adapted to break front of said feed rolls. all the strands on breakage of a single strand in Further objects of our invention are to provide front of the feedrolls initially acting, however, various embodiments of devices adapted to funcon a cutting or trapping means in a vertically tion when single strands only are fed from each spaced row.

vertically spaced pair of strand feed rolls to the Figs. 8 and 9 are rear elevational and longispinning or twisting means, or when a plurality tudinal vertical sectional views respectively, genof strands are fed from each of said vertically erally similar to Figs. 2 and 3 of an embodiment spaced pairs of feed 'rolls to be twisted into threeof our invention adapted to function on devices or four-ply or larger strands. for twisting or spinning more than two strands A further object of our invention is to provide together, namely, of more than one strand from an improved type of tension plate adapted to be each of the rows. inserted between the tension post and feed rolls In the drawings, wherein like characters of of the device shown in said Patent No. 2,064,685 reference indicate like parts throughout, Ill and to insure contact of the strands with the tension It generally indicate a combination strand tenpost and to maintain them taut after leaving the sioning, slack compensating, selective trapping post. and cutting device of the type shown and claimed These and such other objects of our invention in Owens Patent No. 2,064,685 heretofore referred as may hereinafter appear will be best understood to. As stated hitherto, our present invention covfrom a description of the embodiments thereof, ers the adaptation of such a device for use in a such as are shown in the accompanying drawings strand doubling or twisting machine having twistadapted for use on a standard type of double roll ing ring means Ill and a plurality of vertically fancy twister. spaced pairs l4 and Id of strand feed rolls and In the drawings, Fig. 1 is an end elevation of adapted to have the horizontally spaced strands the end pairs of feed rolls of a double roll fancy I8 and I8 passing through the respective pairs -10 twister having one embodiment of our invention of vertically spaced feed rolls l4 and I4. 40

attached thereto comprising a plurality of the While We have shown in the drawings our incutting or trapping devices shown in Patent No. vention applied to a standard type of a double 2,064,685 with means vertically connecting the roll fancy twister, it is obvious that it may be guide levers thereof, with the parts thereof so employed in any type of a strand doubling or 5 connected as to twist together single horizontally twisting machine, feeding strands from a pluspaced strands from each row of feed rolls into rality of vertically spaced tiers, pairs or rows of a single twisted strand and each of the trapping feed rolls.

devices having means adapted to actuate them Broadly speaking, our invention includes emon breakage of the strands in front of their reploying a plurality of the devices shown in said SPQCGiVe ed 0 S- patent, one device ill for one set of feed rolls I4 Fi 2 is a rear elevation of an embodiment of and the other device It for the vertically spaced our improved device in the actual position it lower set of feed rolls i l and means 12 and. 12' assumes in use and employing a pair of cutting operable on breakage of a strand in either row to or trapping means for each vertically spaced row. move vertically to actuate the respective cutting Fig. 3 is a longitudinal vertical sectional view or trapping means to break a strand in the oppo- 'near the feed rolls M of said machine.

embodiment shown adapted to keep said strands separate, each independently pivotally .mounted as at 2 3 and N underneath its respective strand Mi and la and we provide cutting or trapping means and 2G each projecting upwardly and terminating in the respective cutting or trapping edges 28* and 28 Each strandguide 22 and 22 is preferably so pivotally mounted as at 24* and 24' as to normally exert a light weight only on its respective strand and so that it may drop a substantial distance vertically away from its pivot 24 and 26 preferably of its own weight to 'compensate for slack in its respective strand to continuously maintain a uniform tension on said strand with increasing leverage until either on an accumulation of a predetermined amount of slack or on breakage of a strand, said strand guide may act with sufficient increased leverage to actuate said opposite cutting or trapping means 25* and 26 respectively. In my preferred embodiment the guide means 22 and 22 are mounted respectively on the power arms 30* and 30* adapted to actuate the adjacent work arm means 26* and 25 respectively to cut or trap its oppo' site strand respectively on the accumulation of a predetermined amount of slack in the respective strands or on respective breakage of the strands. The respective power arms 3& and are adapted to actuate the independently mounted work arms'Qt and 26 preferably through the medium of a lost motion connection later to be described. Our improved invention also includes the inverted U-shaped frame 32 having the inverted U-base 34, the U-legs 35 and the flanges 3B projecting laterally from the lower ends of said legs having the screw slots 39 therein for mounting thereof on the machine frame I? preferably as in the embodiment shown The inverted U-base 34 is provided with the central transverse slot ii) therein over'opposite ends of which strands are adapted to pass. We also provide the tension post 42 mounted from one leg 33 of said U-shaped frame 32 to extend horizontally transversely over said slot 59 above said strands. While we preferably employ the tension post 42 to assist in exerting a more even tension of the strands to the draft or twisting means It, and to provide a surface against which the trapping or cutting arms 26 and 26 may function, it is obvious that it may if desired, be dispensed with.

We provide a pivot pin 46 mounted transversely of said frame below said post 42 and we mount the relatively light work arms 26' and 26 as the work arms respectively of the pair of trapping levers it and 48 respectively each pivotally mounted adjacent one end of said pivot pin it and having the work arms 26 and Mi thereof extend obliquely transversely upwardly to cross each other and through the respective opposite ends of said frame transverse slot and terminating in the trapping or cutting edges 28 and 28 adjacent the opposite strands below said post 32. the rear pivotal movement of said work arms 26 and 26 is limited by the rear edge of said transverse slot 4!} for the purpose of assisting in 'assist in trapping the threads.

It is thus obvious that with this construction 7 providing the 10st motionconnection later to be described and the forward pivotal movement thereof is limited by the surface of the post 42. Said trapping or cutting levers 18 and 48* are also provided with the power arms 55 and 59 respectively projecting rearwardly therefrom and preferably having a substantially flat lower surface.

In our preferred embodiment we mount a second pivot pin 52 transversely of said frame in rear of said first pivot pin 46 and we provide a pair of guiding levers E i and 54 each pivotally mounted as at 24 and 24 adjacent one end of said second pivot pin 52 each having the work armsit and 56 respectively projecting arcuately forwardly therefrom, in our preferred embodiment bent to generate a substantially involute cam upper surface to abut the lower surface of said trapping lever power arms 53 and 59 respectively to advance said power arms 513 and 59*, where the involute cam surfaces be employed, at' constant speed on dropping of said guide lever power arms 30 and 30 The guide lever power arms til and 3D in this embodim'ent are the respective power arms of the levers 5 3 and 54 and have mounted on the ends thereof the strand receiving and separating guides 22 and 22 respectively; The edges 28 and 23 are mere trapping edges as they function against the rear surface of the post 52 and drawing of the strands l8 and 18 therebetween causes a further wedging action of said edges 28 and 28 against said post to positively The respective .work arms 26 and 26 cross in their upward movement. The width of the slot 40 is so regulated that when the respective power arms 25 and 26 'abut the rear edge of said slot that the respective trapping lever power arms 59 and 50* will be out of' contact with the respective workarms 56 and 58 of the trapping levers 54 and 54*, the forward movement 'of the power arms 30 and 30 of said levers 54 and 54 being limited by abutting the rear edge of said U-shaped frame 32 to thus normally space the work arms 5% and 56 of said guide levers 54 and 54 vertically below and away from the power arms 50 and 50 of said trapping levers 48 and 48 In the embodiment of our invention shown in Figs. 2 and 3 adapted to twist two horizontally spaced strands only, it is obvious that a respective guide 22 in the upper tier and a respective 'guide'22 in the lower tier can be removed and that opposite ends of the drop .wires l2 and 12' are respectively connected to the power arms 39* and 33 and the power arms 39 and 30 so that when a thread in the guide 22 in the upper tier breaks the respective guide lever 39* will drop causing the'rod '52 to drop and causing the guide lever 39 to actuate the opposite trapping edge 28 to trap or cut the opposite strand l8 and vice versa on breakage of the strand i8 in the lower tier to break the strand1i8 in the upper tier.

We have discoveredyhowever, that in working with single strands from each superimposed pair, row or tier, one of the lever power arms 25 and 26 with their respective cutting or trapping edges 28 and 28" may be dispensed with and the single cutting or trapping levers 38 and 18 with their respective trapping edges need be employed as in the embodiments shown in Figs. 4-7., Also if desired cooperating work arms 56 and 56 of the guide levers 54 and '54 only need be retained. In this instance, the

width of the respective retained trapping edges 28 and 28 may be correspondingly lengthened, if desired, but still maintaining the horizontally spaced relationship of the threads is and i8 and their respective guides 22* and 22 As stated, we also provide means normally supported by its respective strand in front of its feed rolls adapted to move on breakage of its respective strand to actuate the trapping or cutting means to break all strands in rear of said feed rolls. In the embodiment shown in Figs. 1, 4 and 5 we have employed an analogous device for this purpose to that shown in Owens Patent No. 2,064,685 and for this purpose provide the supplemental lever 58 independently mounted on said frame 32 as at St having a 7 rear work arm cross bar 52 underlying said trapping lever work arms 28 and 26 and a heavier power arm 54 projecting forwardly from said pivot 50 having strand guide means 66 thereon to be supported by the strand it beyond said feed rolls of said machine adapted on breakage of said strand or on an accumulation of an excessive amount of slack in said strand to tilt said lever 58 to raise the work arm 62 to abut both work arms 26 and/or 26 to raise them both against said tension post 42 or strands it or iii to break said strands. An alternative type of means for this purpose will be described later.

In use, the respective strands i3 and iii in the embodiments shown in Figs. 1-? are threaded through the respective guides 22 and 22 in horizontally spaced relationship and are raised to a normal operating, substantially vertical position in use. We have shown in Figs. 1-5

La'tension plate M we preferably employ to insure contact of each strand is and it with each respective post 22 and 42 and to maintain the respective strands i3 and i8 taut after passing said posts, in the embodiment shown said tension plate M being suitably mounted in a suitable slot it; formed in the top 3% of each U-shaped frame 32 to have the upper edge thereof underlie its respective strand E8 or iii. In normal operation, it will then be obvious that unless too much slack accumulates or a breakage occurs in the strands i8 and 58' that the respective strands l8 and 93 will normally retain their strand guides 22 and 22 and lever power arms 39 and Sit against the rear edge of said frame 32 in a position only'slightly vertically offset from their pivots 2t and E lso that said guides and levers 22 and 22 will exert only a relatively slight weight on the respective strands and will uniformly tension said strands to said twisting or draft means. It is also apparent that with accumulation of slack between the feed rolls i4 and the source of supply of the respective strands iii and I8 that the guides. 22 and 22 and power arms 3t and 3% will drop by gravity of their own weight to com-- pensate for variations in slack in their respective strands away from their respective pivots 24 and 24 to maintain a uniform tension on the respective strands, namely, drop from the position shown in Fig. 1 to the position shown in Fig. Sand as shown'in Fig. 3 to permit said power arm 39' to drop this substantial distance without its work arm 58 contacting said trapping lever power 5E3 to provide a lost motion and that each respective guide lever power arm 38 as shown in Fig. 3 drop a further substantial distance to compensate for slack in its respective strand away from its pivot 24 to still maintain a-substantially uniform tension and with increasing leverage with said work arm 56 as shown in Fig. 3, raising-said trapping lever power arm 50 at constant speed if an involute cam surface be employed until slow dropping of said power arm as shown in Fig. 5 on an excessive amount of slack in the strand l8 or on rapid dropping thereof on breakage of a strand it! causes said trapping lever work arm 26 to abut said lower post or respective vertically spaced strand with sufficient increased leverage to break said vertically spaced strand 58'. It is apparent that when the power arm 30 or strand guide 22 gets near its lowermost position, that it will operate through the weight of the power arms Sil and 30 and connecting guide wire '52 to operate with sufficient leverage to throw the trapping edge 28 against the post &2 to break the strand I8.

The operation of the respective levers 58 and 58 in front of the feed rolls M and I4 adapted to operate their adjacent trapping devices I!) and it to break their respective strands l8 and 58 in front of said rolls i4 and M has been hitherto described. It is thus obvious that when the strand i8 is broken in rear of its feed rolls, in the embodiment of our invention, shown in Figs. 1, 4 and 5, that its respective power arms 3!? and 3t and connection '52 will drop with suflicient leverage to actuate the work arm 26 to cause the trapping or cutting edge 28 thereof to break the strand I8 and, in the device shown in Figs. 1, 4 and 5 additional means are provided normally supported by its respective strand in front of its feed rolls E4 or M connected to its adjacent trapping or cutting means and adapted to drop on breakage of its respective strand in front of its'feed rolls to actuate said adjacent trapping or cutting means to break the adjacent strand in rear of its feed rolls, whereby the respective strand guide for said broken strand may drop to actuate the vertically spaced trapping or cutting means to break another vertically spaced strand in rear of its feed rolls.

We have shown in Figs. 6 and '7, however,

an alternative type of means normally supported by its respective strand in front of its feed rolls adapted to move on breakage of its respective strand to actuate the trapping or cutting means to break the strands in rear of said feed rolls. In this instance, however, said means functions to first break the vertically and horizontally spaced opposite strand in rear of its respective feed rolls, which then in turn by the-mechanisrn hitherto described will function to actuate the proper trapping or cutting means to break the first broken strand in rear of its feed rolls and for this purpose we pivotally mount a supplemental lever 71'? or ll below its respective feed rolls I l or M on a pivot 78 or E8 depending from its respective frame I 2 or l2.- Said lever T5 or ii terminates in a horizontally disposed end 86 or 89' adapted to abut the lower surface of each respective strand it or it in front of its feed rolls and the end 82 or B2 terminating substantially in line with the end of the vertically spaced trapping lever work arm 26 or SW and we provide vertically reciprooatable means or guide wires 84 or 54' each having one end thereor 85' of the respective trapping lever work arm 3 30 or'30 on raising of said respective lever end or 89' on breakage of a thread H3 or I8 infront of its feed rolls to actuate the vertically spaced trapping lever work arm lever 26* or 26 to break the vertically spaced strand H3 or [8' in rear of its feed rolls M or 14, whereby its respective strand guide 22 or 22 may drop to actuate the adjacent trapping and cutting edge 28* or 28 to break the first broken strand 18 or [8' in rear of its feed rolls. The guide Wire 84' is provided with an inwardly bent upper end 86 so as to overlie the extension of the trapping lever work arm 26 whereas the lower end of the guide wire 84 may be left straight to abut the upper surface of the extension 85' of the trapping lever work arm 26 suitable guides 88 and 88 being provided in said frames 32 and 32 for holding the vertically reciprocatable guide 7 Wires 84 and 84'.

The'devices shown in Figs. 1-7 are primarily adapted for use in twisting single strands from a pair, row or tier of feed rolls. We have shown in Figs. 8 and 9 an embodiment of our invention in which two strands for each tier may be twisted into a three or four-ply strand and for this purpose we provide in reality, a single unit H] or Ill for each tier of the exact type shown in Patent No. 2,064,685 and we provide supplemental means to actuate a trapping lever work arm in the opposite vertically spaced tier or row to break a thread in said tier'or row, whereby the other trapping lever work arm will then operate in the usual manner to break the other thread in said row. 7

We have shown in Figs. 8 and 9 therefore, two threads, namely, l8 and l8 respectively passing through the upper device It and two threads l8 and 18 passing through the lower device 10' adapted to be twisted together into the single four-ply strand 99, or if desired one of said threads may be omitted toform a three-ply strand. It is obvious that the device It! or 10' will function to first break on breakage of one of its respective strand Hi or W, or IB or 18 the respective adjacent strand and when this has taken place, it is obvious that both strandspassing through each of the vertically spaced devices I 0 and [9 in each row will become broken. When this eventuality has taken place, we provide means to cause the breakage of all strands in the vertically spaced devices or rows preferably comprising drop wires 92 and 92 passing through suitable holes in guides 94 and 94 on the respective frames 32 and 32' to be vertically reciprocatably mounted adjacent each of the respective posts 42 and 42, each terminating in an end 96 or 96' adapted to overlie a row of strands l8 and l8 or l8 and 18 and an opposite end adapted to abut a forwardly projecting extension or 95 of a respective work arm 28 or 28 preferably located for convenience on the same side of the devices to trip said respective work arm to break one vertically spaced strand, in the embodiment shown, the vertically spaced strands l8 or I8 whereby the respective guide levers 22 and 22 for its respective strand may drop to break its own adjacent strands l3 or I8 in each of said vertically aligned rows of threads.

It is thus obvious that each of the devices It and 10' operates first on breakage of one strand to break the opposite of its pair of strands and when all the strands in each row of the respective devices 19 and II! have broken the respective drop wires 92 and 92 are moved to actuate the respective extensions 95 and 95 to break a strand in the opposite row, whereupon said respective de- 92 is bent inwardly as at 98 to overlie the extension 95 in the upper unit I0.

It is apparent therefore that we have provided various novel embodiments or adaptations of pairs of units' described in Owens Patent No. 2,064,585 or modifications thereof for use in breaking all strands in strand doubling or twisting machines having twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls.

It is understood that our invention is not limited to the specific embodiments shown and that various deviations may be made therefrom without departing from the spirit and scope of the appended claims.

What we claim is:

1. A device for use in a strand doubling or twisting machine having twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls and adapted to have horizontally spaced strands passing through the respective vertically spaced pairs of feed rolls comprising horizontally spaced guides for guiding respective strands to said respective feed rolls adapted to be independently pivotally mounted in rear of their respective feed rolls, individual trapping or cutting means for each strand adapted to be independently pivotally mounted in rear of their respective feed rolls and connecting means extending from the respective strand guides to the respective vertically spaced trapping or cutting means.

2. A device for use in a strand doubling or twisting machine, having twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls and adapted to have strands passing through the respective vertically spaced feed rolls, comprising guides for guiding respective strands to said respective feedrolls adapted to be independently pivotally mounted in rear of their respective feed rolls, individual trapping or cutting means for each strand adapted to be independently pivotally mounted in rear of their respective feed rolls and connecting means ex tending from the respective strand guides to the respective trapping or cutting means. a

3. A device for use in a strand doubling or twisting machine having twisting ring means and a plurality'of vertically spaced pairs of strand nip feed rolls and adapted to have horizontally spaced strands passing through the respective vertically spaced feed rolls, comprising horizontally spaced guides for guiding respective strands to said respective feed rolls adapted to be independently pivotally mounted in rear of their respective feed rolls, individual trapping or cutting means for each strand adapted to be independently pivotally mounted in rear of their respective feed rolls, connecting means extending from the respective strand guides to the respective vertically spaced trapping or cutting means and means normally supported by each respective strand in front of its feed rolls adapted to move on breakage of its respective strand to actuate the trapping or cutting means to break all strands in rear of said feed rolls.

4. A devicefor use in a strand doubling or twisting machine having twisting ring means and a. plurality of vertically spaced pairs of strand nip feed rolls and adapted to have strands passing through the respective vertically spaced feed rolls, comprising guides for guiding respective strands to said respective feed rolls adapted to be independently pivotally mounted in rear of their respective feed rolls, individual trapping or cutting means for each strand adapted to be independently pivotally mounted in rear of their respective feed rolls, connecting means extending from the respective strand guides to the respec tive trapping or cutting means and means normally supported by each respective strand in front of its feed rolls adapted to move on breakage ofits respective strand to actuate the trapping or cutting means to break the strands in rear of said feed rolls.

5. A device for use in a strand doubling or twisting machine having twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls and adapted to have horizontally spaced strands passing through the respective vertically spaced feed rolls, comprising horizontally spaced guides for guiding respective strands to said respective feed rolls adapted to be independently pivotally mounted in rear of their respective feed rolls, individual trapping or cutting means for each strand adapted to be independently pivotally mounted in rear of their respective feed rolls, connecting means extending from the respective strand guides to the respective spaced trapping or cutting means, and means normally supported by each respective strand in front of its feed rolls connected to the adjacent trapping or cutting means and adapted to drop on breakage of its respective strand to actuate said adjacent trapping or cutting means to break an adjacent strand in rear of its feed rolls, whereby the respective strand guide for said broken strand may drop to actuate the Vertically spaced trapping or cutting means to break another vertically spaced strand in rear of its feed rolls.

6. A device for use in a strand doubling or twisting machine having twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls and adapted to have strands passing through the respective vertically spaced feed rolls, comprising guides for guiding respective strands to said respective feed rolls adapted to be independently pivotally mounted in rear of their respective feed rolls, individual trapping or cutting means for each strand adapted to be independently pivotally mounted in rear of their respective feed rolls, connecting means extending from the strand guides to the respective trapping or cutting means, and means normally supported by each respective strand in front of its feed rolls connected to the adjacent trapping or cutting means and adapted to drop on breakage of its respective strand to actuate said adjacent trapeping or cutting means to break an adjacent strand in rear of its feed rolls, whereby the respective strand guide for said broken strand may drop to actuate the vertically spaced trapping or cutting means to break another vertically spaced strand in rear of its feed rolls.

7. A device for use in a strand doubling or twisting machine having twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls and adapted to have horizontally spaced strands passing through the respective vertically spaced feed rolls, comprising guides for guiding respective strands to said respective feed rolls adapted to be independently pivotally mounted in rear of their respective feed rolls, individual trapping or cutting means for each strand adapted to be independently pivotally the adjacent trapping or cutting means to break the first broken strand in rear of its feed rolls.

8. A device for use in a strand doubling or twisting machine having twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls and adapted to have strands passing through the respective vertically spaced feed rolls, comprising guides for guiding respective strands to said respective feed rolls adapted to be independently pivotally mounted in rear of their respective feed rolls, individual trapping or cutting means for each strand adapted to be independently pivotally mounted in rear of their respective feed rolls, connecting means extending from the respective strand guides to the respective trapping or cutting means, and means normally supported by each respective strand in front of its feed rolls connected to the vertically spaced trapping or cutting means and adapted to rise on breakage of its respective strand to actuate a vertically spaced trapping or cutting means to break a vertically spaced strand in rear of its feed rolls, whereby its respective strand guide may drop to actuate the adjacent trapping or cutting means to break the first broken strand in rear of its feed rolls.

9. A device for use in a strand doubling or twisting machine having twisting ring means and a plurality of vertically spaced rows of strand nip feed rolls and adapted to have strands passing through the respective vertically spaced feed rolls, comprising individual trapping or cutting means for each strand in a row adapted to be independently pivotally mounted in rear of their respective nip rolls and means operable on breakage of a strand in either row to move to actuate the respective cutting or trapping means to break a strand in the opposite row.

10. A device for use in a strand doubling or twisting machine having twisting ring means and a plurality of vertically spaced rows of strand nip feed rolls and adapted to have strands passing through the respective vertically spaped feed rolls, comprising individual trapping or cutting means for all strands in a row adapted to be in-V dependently pivotally mounted in rear of their respective nip rolls and means operable on breakage of a strandin eitherrow to move to actuate the respective cutting or trapping means to break all the strands in the opposite row.

11. A device for use in a strand doubling or twisting machine having twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls and adapted to have horizontally spaced strands passing through the respective vertically spaced feed rolls, comprising a pair of lever means each adapted to be independently pivotally mounted underneath each respective strand having work arm means having a horizontally spaced cutting or trapping edge for the opposite strand and having heavier power arm means each including a portion pivotally mounted adjacent the respective strand having strand guide means for said strand mounted thereon and a movable portion connecting said pivotal strand guide holding portion and said work arm means to actuate on breakage of said strand said work arm means to break said horizontally and vertically spaced strand.

12. A selective trapping or cutting device for use in strand doubling or twisting machines hav ing twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls and adapted to have horizontally spaced strands passing through the respective vertically spaced feed rolls, comprising a tension post adapted to be mounted transversely horizontally above each vertically spaced row of strands, a pivot pin adapted to be mounted transversely below each post, a trapping lever pivotally mounted on each pivot pin and having a work arm extending upwardly and terminating in a trapping or cutting edge below said post and a power arm projecting rearwardly therefrom, a second pivot pin adapted to be mounted transversely of said post in rear of said first pivot pin, a pair of guide levers each pivotally mounted adjacent one end of each second pivot pin, one of said guide levers for each second pin having a work arm projecting arcuate- 1y forwardly therefrom to abut the lower surface of said trapping lever power arm to advance it and the other of said guide levers for each second pin having a strand receiving and separating guide mounted thereon and vertically movable means connecting the horizontally aligned guide levers to actuate on breakage of one strand the respective work arm for the opposite strand to break said vertically and horizontally spaced strand and tension plates adapted to be mounted between the guides and feed rolls having upper edges adapted to abut the strands.

13. A selective trapping or cutting device for use in strand doubling or twisting machines having twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls and adapted to have horizontally spaced strands passing through the respective vertically spaced feed rolls, comprising a tension post adapted to be mounted transversely horizontally above each vertically spaced row of strands, a pivot pin adapted to be mounted transversely below each post, a trapping lever pivotally mounted on each pivot pin and having a work arm extending upwardly and terminating in a trapping or cutting edge below said post and a power arm projecting rearwardly therefrom, a second pivot pin adapted to be mounted transversely of saidpost in rear of said first pivot pin, a pair of guide levers each pivotally mounted adjacent one end of each second pivot pin, one of said guide levers for each second pin having a work arm projecting arcuately forwardly therefrom to abut the lower surface of said trapping lever power arm to advance it and the other of said guide levers for each second pin having a strand receiving and separating guide mounted thereon and vertically movable means connecting the horizontally aligned guide levers to actuate on breakage of one strand the respective work arm for the opposite strand to break said vertically an horizontally spaced strand.

14. A selective trapping or cutting device for use in strand doubling or twisting machines having twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls and adapted to have horizontally spaced strands passing through the respective vertically spaced feed rolls, comprising a tension post adapted to be mounted transversely horizontally above each vertically spaced row of strands, a pivot pin pin adapted to be mounted transversely of said' post in rear of said first pivot pin, a pair of guide levers each pivotally mounted adjacent one end of each second pivot pin, one of said guide levers for each second pin having a work arm projecting arcuately forwardly therefrom to abut the lower surface of said trapping lever power arm to advance it and the other of said guide levers.

for each second pin having a strand receiving and separating guide, mounted thereon, horizontally movable means connecting the vertically alignediguide levers to actuate on breakage of one strand the respective work arm for the opposite strand to break said vertically and horizontally spaced strand and means normally supported by each respective strand in front of its feed rolls adapted toimove on breakage of its respective strand to actuate the trapping or cutting means to break all strands in rear of said feed rolls.

15. A selective trapping or cutting device for use in strand doubling or twisting machines having twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls and adapted to have horizontally spaced strands passing through the respective vertically spaced feed rolls, comprising a tension post adapted to be mounted transversely horizontally above each vertically spaced row of strands, a pivot pin adapted to be mounted transversely below each post, a trapping lever pivotally mounted on each pivot pin and having a work arm extending upwardly and terminating. in a trapping or cutting edge below said post and a power arm projecting rearwardly therefrom, a second pivot pin adapted to be mounted transversely of said post in rear of said first pivot pin, a pair of guide levers each pivotally mounted adjacent one end of each second pivot pin, one of'said guide levers for each second pin having a work arm projecting arcuately forwardly therefrom to abut the lower surface of said trapping lever power arm to advance it and the other of said guide levers for each second pin having a strand receiving and separating guide mounted thereon, vertically movable means connecting the horizontally aligned guide levers to actuate on breakage of one strand, the respective work arm for the opposite strand to break said vertically and horizontally spaced strand, and a supplemental lever adapted to be independently pivotally mounted to have a rear work arm cross bar underlying each trapping lever work arm and .a heavier power arm projecting, forwardly from its pivot having a strand guide thereon adapted to be supported by the single stand in front of its respective feed rolls adapted to drop on breakage of its respective strand to actuate said adjacent trapping or cutting means to break an adjacent strand in rear of its feed rolls, whereby the respective guide of said broken strand may drop to actuate the vertically spaced trapping or cutting means to break said vertically and horizontally spaced strand in rear of its feed rolls.

16. A selective trapping or cutting device for use in strand doubling or twisting machines having twisting ring means and a plurality of vertically spaced pairs of strand nip-feed'rolls and adapted to have horizontally spaced strands passing through the respective vertically spaced feed rolls, comprising a tension post adapted to be mounted transversely horizontally above each vertically spaced row of strands, a pivot pin adapted to be mounted transversely below each post, a trapping lever pivotally mounted on each pivot pin and having a work arm extending upwardly and terminating in a trapping or cutting edge below said post and a power arm projecting rearwardly therefrom, a" second pivot pin adapted to be mounted transversely of said post in rear'of said first pivot pin, a pair of guide levers each pivotally mounted adjacent one end of each second pivot pin, one of said guide levers for each second pin having a'work arm projecting arcuately forwardly therefrom to abut the lower surface of said trapping lever power arm to advance it and the other of said guide levers for each second pin having a strand receiving and separating guide mounted thereon, vertically movable means connecting the horizontally aligned guide levers to actuate on breakage of one strand, the respective work arm for the opposite strand to break said vertically and horizontally spaced strand and a supplemental lever adapted to be pivotally mounted below each set of nip rolls having a power arm terminating ina horizontally disposed end adapted to abut the lower surface of each respective strand in front of its feed rolls and a work arm terminating substantially vertically in line with the end of the respective vertically spaced trapping lever power arm and vertically reciprocatable means having one end thereof pivotally attached to the work arm of said lever and the opposite end thereof adapted to abut the upper surface of said trapping lever to drop on rising of the respective lever power arm on breakage of its respective strand to actuate the vertically spaced trapping lever to break a vertically spaced strand in rear of its feed rolls, whereby its respective strand guide may drop to actuate the adjacent trapping or cutting edge to break the first broken strand in rear of its feed rolls.

17. A selective trapping or cutting device for use in strand doubling or twisting machines having twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls and adapted to have horizontally spaced pairs of strands passing through the respective vertically spaced feed rolls, comprising a tension post adapted to be mounted transversely horizontally above each vertically spaced row of strands, a pivot pin adapted to be mounted transversely below each post, a pair of trapping levers each pivotally mounted adjacent one end of said pivot pin and having a work arm extending obliquely transversely upwardly and terminating in a trapping or cutting edge below said post adjacent the opposite adjacent horizontally spaced strand and a power arm projecting rearwardly therefrom, a second pivot pin adapted to be mounted transversely of said post in rear of said first pivot pin, a pair of guide levers each pivotally mounted,

adjacent one end of said second pivot pin, each having a work arm projecting arcuately forwardly therefrom to abut the lower surface of said trapping lever power armto advance it and a power arm, one of each horizontally aligned power arms only having a strand receiving and separating guide mounted on the end thereof and vertically movable means connecting the horizontally aligned guide levers to actuate on breakage of one strand the respective work arm for the vertically and horizontally spaced strand to break said vertically and horizontally spaced strand.

18. A selective trapping or cutting device for use in strand doubling or twisting machines having twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls and adapted to have horizontally spaced rows of strandspassing through the respective vertically spaced feed rolls comprising a tension post adapted to be mounted transversely horizontally above each vertically superimposed row of strands, a pivot pin adapted to be mounted transversely below each post, a pair of trapping levers each pivotally mounted adjacent one end of said pivot pin and having a work arm extending obliquely transversely upwardly and terminating in a trapping or cutting edge below said post -adjacent the opposite adjacent horizontally spaced strandand a power arm projecting rearwardly therefrom, a second pivot pin adapted to be mounted transversely of said post in rear of said first pivot pin, a pair of guide levers each pivotally mounted adjacent one end of said second pivot pin each having a work arm projecting arcuately forwardly therefrom to abut the lower surface of said trapping lever power arm to advance it and a power arm having a strand receiving and separating guide mounted on the end thereof and vertically movable drop wires connecting said horizontallyaligned guide levers to actuate on breakage of one strand the respective work arm for a vertically and horizontally spaced strand to break said vertically and horizontally spaced strand.

19. A selective trapping or cutting device for use in strand doubling or twisting machines having twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls and adapted to have horizontally spaced rows of strands passing through the respective vertically spaced feed rolls comprising a tension post adapted to be mounted transversely horizontally above each Vertically spaced row of strands, a pivot pin adapted to be mounted transversely below each post, a pair of trapping levers each pivotally mounted adjacent one end of said pivot pin and having a work arm extending obliquely transversely upwardly and terminating in a trapping or cutting edge below said post adjacent the opposite adjacent horizontally spaced strand and a power arm projecting rearwardly therefrom, a second pivot pin adapted to be mounted transversely of said post in rear of said first pivot pin, a pair of guide levers, each pivotally mounted adjacent one end of said second pivot pin each having a work arm projecting arcuately forwardly therefrom to abut the lower surface of said trapping lever power arm to advance it and a power arm having a strand receiving and separating guide mounted on the end thereof and vertically movable means connecting the horizontal ly aligned guide levers to actuate on breakage of one strand the respective work arm for the horizontally spaced and adjacent strand to break said horizontally spaced and adjacent strand and drop wires vertically'reciprocatably mounted adjacent each respective post, each terminating in one end adapted to vertically overlie a row of strands and an opposite end adapted to actuate the work arm of a vertically spaced trapping lever to break a vertically spaced strand, whereby the respective guide lever may drop to break the opposite vertically spaced strand in each of said vertically spaced rows of strands.

20. A device for use in a strand doubling or twisting machine having twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls and adapted to have rows of horizontally spaced strands passing through the respective vertically spaced feed rolls, comprising a pair of lever means each adapted to be independently pivotally mounted underneath each respective horizontally spaced strand in each row having work arm means having a respectively horizontally spaced cutting or trapping edge for the opposite strandin said row and having a heavier power arm means having strand guide means mounted on the end thereof to actuate its respective work arm means to cut or trap the opposite strand in said row on breakage of its strand and means operable on breakage of the strands in either row to move to actuate a cutting or trapping Work arm to break a strand in the opposite row, whereby its respective work arm means may rise to break the adjacent strand.

21. A device for use in a strand doubling or twisting machine having twisting ring means and a plurality of vertically spaced pairs of strand nip feed rolls and adapted to have rows of horizontally spaced strands passing through the respective vertically spaced feed rolls, comprising a pair of lever means each adapted to be independently pivotally mounted underneath each' respective horizontally spaced strand in each row having work arm means having a respectively horizontally spaced cutting or trapping edge for the opposite strand in said row and a horizontally projecting extension and having heavier power arm means having strand guide means mounted on the end thereof to actuate its respective work arm means to cut or trap the opposite strand in said row on breakage of its strand and drop wires vertically reciprocatably mounted adjacent each respective post each terminating in one end adapted to vertically overlie a row of strands and an opposite end adapted to abut a vertically spaced trapping lever work arm means extension on breakage of all strands in said row to actuate said work arm means to break a vertically spaced mounted transversely below said post, a pair of trapping levers each pivotally mounted adjacent one end of said pivot pin and having a'work arm extending obliquely transversely upwardly and terminating in a trapping or cutting edge below said post adjacent theopposite strand and a power arm projecting rearwardly therefrom, a second pivot pin mounted transversely of said frame in rear'of said first pivot pin, a pair of guide levers each pivotally mounted adjacent one end of said second pivot pin, each having a work arm projecting arcuately forwardly therefrom to abut the lower surface of said trapping lever power arm to advance it and a heavier power arm having a strand receiving and separating guide mounted on the end thereof and a tension plate adapted to be mounted on said frame having an upper edge adapted to abut the strands.

SAMUEL BOTTOMLEY. HENRY OWENS. 

